Wisconsin · NRPP & NRSB verified
Certified radon mitigators in Wisconsin
Every contractor on this list is verified against the public NRPP ( nrpp.info) or NRSB ( nrsb.org) registry. We refresh quarterly. Always confirm the cert ID at the source before signing.
EPA radon zone summary: Zone 1 (highest — avg ≥ 4 pCi/L)
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